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Influence of Rare Earth Oxide Concentration on Electrochemical Co-Deposition of Nd and Pr from NdF3-PrF3-LiF Based Melts
dc.creator | Cvetković, Vesna S. | |
dc.creator | Feldhaus, Dominic | |
dc.creator | Vukićević, Nataša M. | |
dc.creator | Milićević-Neumann, Ksenija | |
dc.creator | Barudžija, Tanja | |
dc.creator | Friedrich, Bernd | |
dc.creator | Jovićević, Jovan N. | |
dc.date.accessioned | 2022-09-27T12:34:02Z | |
dc.date.available | 2022-09-27T12:34:02Z | |
dc.date.issued | 2022 | |
dc.identifier.issn | 2075-4701 | |
dc.identifier.uri | https://vinar.vin.bg.ac.rs/handle/123456789/10416 | |
dc.description.abstract | The impact of rare earth oxide (REO) concentration on the deposition process and selective recovery of the metal being deposited from a molten fluoride salt system was investigated by applying deposition of Nd and Pr and varying the concentration of REO added to the electrolyte. A ternary phase diagram for the liquidus temperature of the NdF3-PrF3-LiF system was constructed to better predict the optimal electrolyte constitution. Cyclic voltammetry was used to record three redox signals, reflecting the processes involving Nd(III)/Nd and Pr(III)/Pr transformations. A two-step red/ox process for Nd(III) ions and a single-step red/ox process for Pr(III) ions were confirmed by square-wave voltammetry. The cyclic voltammetry results indicated the possibility of neodymium and praseodymium co-deposition. In order to sustain higher co-deposition rates on the cathode and to avoid increased production of PFC greenhouse gases on the anode, a low-overpotential deposition technique was used for Nd and Pr electrodeposition from the electrolyte with varying Nd2O3 and Pr6O11 concentrations. Co-deposited neodymium and praseodymium metals were characterized by electron probe microanalysis (EPMA) and X-ray diffraction (XRD) analysis. After electrodeposition, concentration profiles of neodymium and praseodymium were recorded, starting from the cathode surface towards the electrolyte bulk. The working temperature of 1050 °C of the molten fluoride salt basic electrolyte, in line with the constructed phase diagram, was validated by improved co-deposition and led to a more effective deposition process. | en |
dc.language | en | |
dc.relation | info:eu-repo/grantAgreement/MESTD/inst-2020/200026/RS// | |
dc.relation | Bilateral research project between Ministry of Education, Science and Technological Development of the Republic of Serbia and German Academic Exchange Service (DAAD) - [ID:451-03- 01344/2020-09/8] | |
dc.rights | openAccess | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.source | Metals | |
dc.subject | co-deposition | en |
dc.subject | EPMA | en |
dc.subject | fluoride melts | en |
dc.subject | Nd | en |
dc.subject | Pr | en |
dc.subject | ternary phase diagram | en |
dc.subject | XRD | en |
dc.title | Influence of Rare Earth Oxide Concentration on Electrochemical Co-Deposition of Nd and Pr from NdF3-PrF3-LiF Based Melts | |
dc.type | article | en |
dc.rights.license | BY | |
dc.citation.volume | 12 | |
dc.citation.issue | 7 | |
dc.citation.spage | 1204 | |
dc.identifier.wos | 00083367250000 | |
dc.identifier.doi | 10.3390/met12071204 | |
dc.type.version | publishedVersion | |
dc.identifier.scopus | 2-s2.0-85137380145 | |
dc.identifier.fulltext | http://vinar.vin.bg.ac.rs/bitstream/id/26868/metals-12-01204-v2.pdf |
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